I have gone and assigned track ID's to all of the spurs and yard tracks on my layout. They are all printed on the back of my timetables, so now when someone comes by for an operating session, they will have a list of all the tracks and where they are located, in case they have any work to do. (cars to lift of set off.) In addition to that, the length in N scale feet is listed too, so you know if your cars or train will fit in a siding or a back track. I'll scan the page and post it.